手机号码的正则表达式，在某些条件下验证电话号码

Question

I want to validate both mobile number and phone number in regex. So the regex should pass all the below rules

1. There has to be at least 5 numerical.

2. The special characters like +,(),-, # are to be used only once

3. open and close brackets should exist mutually ie, if an open bracket is used, It has to be closed mandatorily

4. Maximum numbers should be 20.

So to make this I have added this piece of code.

//validate phone
function validatePhone( phone ) {
    var regex = /^(?:(?:\(?(?:00|\+)([1-4]\d\d|[1-9]\d?)\)?)?[\-\.\ \\\/]?)?((?:\(?\d{1,}\)?[\-\.\ \\\/]?){0,})(?:[\-\.\ \\\/]?(?:#|ext\.?|extension|x)[\-\.\ \\\/]?(\d+))?$/i;
    return regex.test( phone );
}

But its not validating above all the conditions.

Update It should accept all these phone numbers

(+355)250235
+91 123456789012
(+355) 250-236-236-789
(+355) 2502-3656-1236-8789
+920123456789012345987
(+355) 250235 #10

Answer 1

You could assert at least 5 digits and not 21 digits.

Then match either the part with or without parenthesis and optionally match the part with # at the end.

^(?=(?:[^\n\d]*\d){5})(?!(?:[^\n\d]*\d){21})(?:\(\+?\d+\)|\+?\d+) ?\d+(?:-\d+)*(?: ?#\d+)?$

Regex demo

Answer 2

First, remove the space and - (hyphen) using the below

 var temp =str.replace(/([\s\-])/g, ''); 

Then test it using the below reg ex

^((\(){1}(\+?\d{3}(\)){1})|(\+)?\d{3})(\d){2,17}$

Try use the below function

function validate (str){

 var temp =str.replace(/([\s\-])/g, '');  
  var patt = /^((\(){1}(\+?\d{3}(\)){1})|(\+)?\d{3})(\d){2,17}$/g;
  var result = patt.test(temp);
}

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